Apple TV+ to Have Streamed Six Seasons of Slow Horses in Four Years by September

Apple TV+ will have streamed six seasons of Slow Horses in four years when Season 6 premieres in September 2026, per Deadline (26 August 2026). Gary Oldman, at the Edinburgh TV Festival, said the team works hard to "keep the momentum of the show going" — a compressed cadence rare in prestige streaming. Apple confirmed Season 6 runs six episodes.